STC Modifications
You can raise a modification – or mod – when you want to propose a change to any part of the STC.
For more information, please contact [email protected]
Search for any current or concluded modifications by name or ID. You can sort mods by ID, name, status or date of update. Or filter according to status.
| ID Sort descending | Name | Status | Last Updated | |
|---|---|---|---|---|
| CM061 | CM061: This proposal seeks to modify the System Operator Transmission Owner Code (STC) to align the elections process to those in the SQSS to allow for an 'Alternative OFTO Election Process' and extend the term of office from one year to two years | Concluded | ||
| CM062 | CM062: This proposal seeks to implement the license changes to the STC arising from Ofgem's Code Governance Review (Phase 3) | Concluded | ||
| CM063 | CM063: Modify the definition of Force Majeure (Section J: Interpretation and Definitions) | Concluded | ||
| CM064 | CM064: Update to the STC Schedule 4,Boundaries of Influence | Concluded | ||
| CM065 | CM065: National Grid Legal Separation - consequential changes to reference NGESO in STC Section C and changes to Outage Planning Data Timescales | Concluded | ||
| CM066 | CM066: National Grid Legal Separation - consequential changes to reference NGESO in STC Section G and to place Nuclear Site Licence Provisions Agreement obligations on NGET for England and Wales | Concluded | ||
| CM067 | CM067: National Grid Legal Separation - consequential changes to reference NGESO into STC Section B and changes to STC Modification Panel membership to add NGESO as Member | Concluded | ||
| CM068 | CM068: National Grid Legal Separation - consequential changes to reference NGESO in STC Section D and to provide clarity that only Transmission Owners create Transmission Investment Plans | Concluded | ||
| CM069 | CM069: National Grid Legal Separation - consequential changes to incorporate NGESO in STC Sections & Schedules | Concluded | ||
| CM070 | CM070: Consequential STC Updates following implementation of RfG and HVDC into the GB Grid Code | Concluded |
More about modifications
Our Tracker gives you the latest details on current code modifications including the purpose and the stakeholders it affects, as well as panel comments and where it is in the review process. It is published on the 7th (or next working day) of each month.
STCP Modification Proposal Form
Download the STCP Proposal form, when we receive your Proposal, we'll check it through and work together to make sure it's easy to understand.
STC Modification Proposal Form
Download the STC Proposal form, when we receive your Proposal, we'll check it through and work together to make sure it's easy to understand.
Once you've been in touch and are ready to write your Proposal paper, send it to us by the monthly modification submission date which you can find on our Calendar.